Anastoechus chinensis Paramonov, 1930

Yao, Gang, Yang, Ding & Evenhuis, Neal L., 2010, The genus Anastoechus Osten Sacken, 1877 (Diptera: Bombyliidae) from China, with descriptions of four new species, Zootaxa 2453, pp. 1-24 : 7

Anastoechus chinensis Paramonov, 1930

( Figs. 5 , 15 , 45–50 )

Anastoechus chinensis Paramonov, 1930: 445 (95). Type locality: China (Beijing).

Diagnosis. Abdominal dorsum with long dense yellowish hairs laterally and dorsally, long dense yellowish erect hairs and with a row of yellowish bristles with dark brown tip posteriorly, tergites 7–8 with long white hairs. Epandrium trapezoidal, distinctly higher than long; epiphallus subtriangular, acute at tip in dorsal view. Redescription. Male. Body length 10–14 mm, wing length 9–13 mm.

Head ( Fig. 5 ) black with pale dust. Hairs on head mostly white; frons narrowing directed distally, with long sparse black erect hairs, face with long dense white erect hairs and long sparse black erect hairs; occiput with long dense white hairs and long sparse black erect hairs. Antenna black except yellow at joint; scape elongate with long dense white hairs; first flagellomere elongate, bare, with a stylus at tip. Proboscis black, bare, nearly four times longer than head.

Thorax black with brown dust. Hairs on thorax yellowish and white; postpronotal lobe with long dense yellowish hairs, mesonotum with long dense yellowish hairs; thorax with dense yellowish hairs on back, anepisternum and katepisternum with long dense white hairs. Scutellum black with long dense yellowish erect hairs, with six yellow bristles each side. Legs brown except tip of tarsi black. Hairs on legs mostly yellow, bristles yellow. Femora with dense white scales; tibiae and tarsi with short yellow hairs and sparse white scales. Mid femur with five av apically; hind femur with seven av. Mid tibia with eight ad, 13 pd, eight av, nine pv; hind tibia with nine ad, eight pd, eight av and seven pv. Wing ( Fig. 15 ) uniformly faint brown. Vein rm close to tip of cell dm, cell r5 closed. Base of vein C with brush-like long black bristle and white hairs. Halteres brown.

Abdomen black with brown dust. Hairs on abdomen yellowish and white; dorsum with long dense yellowish erect hairs and posterior with a row of yellowish bristles with dark brown tips, tergites 7–8 with long white hairs. Sternites with long dense white erect and recumbent hairs.

Male genitalia ( Figs. 45–50 ). Epandrium trapezoidal, distinctly higher than long; cercus well exposed in lateral view; epandrium slightly wider than long, slightly narrowing apically in dorsal view; gonocoxite with black bristle-like hairs apically, distinctly narrowing apically in ventral view; gonostylus oval, its tip acute in lateral view; epiphallus subtriangular, acute at tip in dorsal view, epiphallus with a rather long and narrow tip in lateral view.

Female. Body length 11–14 mm, wing length 10–13 mm. Similar to male, but distance between eyes much longer than that in male; abdomen sharply narrowing from middle to tip.

Specimens examined. CHINA: BEIJING: Beijing (N 39° 54’ 29’’ E 116° 23’ 53’’), 1. X. 1947, 1 male, Jikun, Yang (CAU); Changping, Shisanling (N 40° 16’ 20’’ E 116° 13’ 30’’), 31. VIII. 1952, 1 male, Jikun, Yang (CAU); Mentougou, Miaofeng Mountain (N 39° 58’ 32’’ E 116° 03’ 01’’), 13. IX. 1986, 1 female, Xiaochun, Zhang (CAU); Yuquan Mountain (N 39° 59’ 31’’ E 116° 15’ 02’’), 8. X. 1947, 1 male, Jikun, Yang (CAU); INNER MONGOLIA: Wuchuan, Heiniugou (N 41° 14’ 57’’ E 111° 45’ 50’’), 23. VIII. 2005, 1 male, Dengfei Wang (IMAU), 25. VIII. 2005, 1 male, Xiujuan Liu (IMAU); Xilinguole, Bai Qi (N 43° 57’ 12’’ E 116° 03’ 59’’), 17. VIII. 2002, 2 males, 1 female, Yuanchao Guo (IMNU), 19. VIII. 2002, 1 male, Yuanchao Guo (IMNU), 23. VIII. 1980, 1 male, 1 female, Yuanchao Guo (IMNU); SHANDONG: Wudi (N 37° 44’ 22’’ E 117° 36’ 50’’), X. 1987, 4 males, Shuguo Du (CAU); X. 1986, 2 males, Shuguo Du (CAU); X. 1987, 7 females, Shuguo Du (CAU); TIANJIN: Ji Town, Cuiping Mountain (N 39° 59’ 53’’ E 117° 25’ 28’’), 2. X. 1984, 1 female, Liu (CAU).

Distribution. China (Beijing, Inner Mongolia, Shandong, Tianjin).

Figures

FIGURES 1 – 11. Anastoechus heads, 1. Anastoechus asiaticus Becker; 2. Anastoechus aurecrinitus Yang et Du; 3. Anastoechus candidus sp. nov.; 4. Anastoechus chakanus Du et al.; 5. Anastoechus chinensis Paramonov; 6. Anastoechus doulananus Du et al.; 7. Anastoechus fulvus sp. nov.; 8. Anastoechus turriformis sp. nov.; 9. Anastoechus xuthus sp. nov.; 10. Anastoechus neimongolanus Du & Yang.

FIGURES 11 – 20. Anastoechus wings, dorsal view. 11. Anastoechus asiaticus Becker; 12. Anastoechus aurecrinitus Yang et Du; 13. Anastoechus candidus sp. nov.; 14. Anastoechus chakanus Du et al.; 15. Anastoechus chinensis Paramonov; 16. Anastoechus doulananus Du et al.; 17. Anastoechus fulvus sp. nov.; 18. Anastoechus turriformis sp. nov.; 19. Anastoechus xuthus sp. nov.; 20. Anastoechus neimongolanus Du & Yang.

FIGURES 45 – 50. Anastoechus chinensis Paramonov male genitalia. 45. epandrium and cercus, dorsal view; 46. epandrium and cercus, lateral view; 47. gonocoxite and gonostylus, lateral view; 48. phallus, dorsal view; 49. phallus, lateral view; 50. gonocoxite and gonostyli, ventral view.